//
//  UserTableViewController.m
//  ProjectB
//
//  Created by lanou on 16/5/10.
//  Copyright © 2016年 lanou. All rights reserved.
//

#import "UserTableViewController.h"
#import "YYCoreDataHandler.h"
#import <SVProgressHUD.h>

@interface UserTableViewController ()

@property (nonatomic, strong) NSMutableArray *dataSource;

@end

@implementation UserTableViewController

- (NSMutableArray *)dataSource {
    if (!_dataSource) {
        _dataSource = [[NSMutableArray alloc] init];
    }
    return _dataSource;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;
    
    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
//     self.navigationItem.rightBarButtonItem = self.editButtonItem;
    
    UIBarButtonItem *addItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(add)];
    self.navigationItem.rightBarButtonItem = addItem;
    UIBarButtonItem *backItem = [UIBarButtonItem createBackImageItem];
    backItem.target = self;
    backItem.action = @selector(back);
    self.navigationItem.leftBarButtonItem = backItem;
    self.navigationController.navigationBar.tintColor = [UIColor grayColor];
    
    [self.dataSource addObjectsFromArray:[[YYCoreDataHandler sharedCoreDataHandler] selectAllObjects]];
    
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
}

- (void)back {
    [self.navigationController dismissViewControllerAnimated:YES completion:nil];
}

- (void)add {
    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"currentUser"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [self.navigationController dismissViewControllerAnimated:YES completion:nil];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.dataSource.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    
    // Configure the cell...
    cell.textLabel.text = [[self.dataSource objectAtIndex:indexPath.row] name];
    
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [[NSUserDefaults standardUserDefaults] setObject:[[self.dataSource objectAtIndex:indexPath.row] name] forKey:@"currentUser"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    self.changeBlock();
    [self.navigationController dismissViewControllerAnimated:YES completion:nil];
}

// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}

// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [[YYCoreDataHandler sharedCoreDataHandler] deleteObjectByKey:[[self.dataSource objectAtIndex:indexPath.row] name]];
        [self.dataSource removeObjectAtIndex:indexPath.row];
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
        if (self.dataSource.count == 0) {
            [self performSelector:@selector(back) withObject:nil afterDelay:0.3];
            [SVProgressHUD showInfoWithStatus:@"请至少添加一个用户"];
        }
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end
